Give the biological/technical terms for the following:

ix. The sound produced when the atrio-ventricular valves close in the heart.

32.

Give the biological/technical terms for the following:

x. The process by which white blood cells engulf bacteria.

The number of chromosomes in a certain type of cell division is halved. This kind of cell division occurs in 

• Only testis

• Only ovary

• Both ovary and testis

• Both ovary and testis

Choose the correct answer from the four options given below:

Which one of the following in mainly associated with the maintenance of the posture?

• Cerebrum

• Cerebellum

• Thalamus

• Thalamus

Choose the correct answer from the four options given below :

A single highly coiled tube where sperms are stored, gets concentrated and mature is known as 

• Epidydymis

• Vas differentia

• Vas deferens

• Vas deferens

Choose the correct answer from the four options given below:

BCG vaccine is effective against:

• Cholera

• Mumps

• Tuberculosis

• Tuberculosis

Choose the correct answer from the four options given below statement:

(i) An example of non-biodegradable waste is

• vegetable peels

• sewage

• Livestock waste

• Livestock waste

Choose the correct answer from the four options given below:

A single highly coiled tube where sperms are stored, gets concentrated and mature us known as:

• Epididymis

• Vas efferentia

• Vas deferens

• Vas deferens

Choose the correct answer from the four options given below:

Chromosomes get aligned at the centre of the cell during:

• Metaphase

• Anaphase

• Prophase

• Prophase

Choose the correct answer from the four options given below:

Which one of the following associated with the maintenance of the posture?

• Cerebrum

• Cerebellum

• Thalamus

• Thalamus